package homework.apiday06.io2;

import collection.SortInteger;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;

public class StreamApiDemo {
    public static void main(String[] args) {
        Random rand = new Random();
        List<Integer> list = new ArrayList<>();
        for (int i=0;i<10;i++){
            list.add(rand.nextInt(10));
        }
        System.out.println(list);

        //map
        List<Integer> list2 = list.stream()
                .map(e->e*3)
                .collect(Collectors.toList());
        System.out.println(list2);

        //filter
        List<Integer> list3 = list.stream()
                .filter(e->e%2==0)
                .collect(Collectors.toList());
        System.out.println(list3);

        //distinct
        List<Integer> list4 = list.stream()
                .distinct()
                .collect(Collectors.toList());
        System.out.println(list4);

        //sorted
        List<Integer> list5 = list.stream()
                .sorted((e1,e2)->e1-e2)
                .collect(Collectors.toList());
        System.out.println(list5);

        //综合处理
        List<Integer> list6 = list.stream()
                .map(e->e*3)
                .filter(e->e%2==0)
                .distinct()
                .sorted((e1,e2)->e2-e1)
                .collect(Collectors.toList());
        System.out.println(list6);











    }
}
